Boundary dimensions · schematic, not a product photograph or manufacturing drawing.
Deep groove ball
6808
6808 is a deep groove ball designation documented on BearingIndex from 3 independent manufacturer publications. The published boundary dimensions are 40 × 52 × 7 mm. The designation ends in bore code 08, which resolves to a 40 mm bore under ISO 15 and matches what the manufacturers published. The publishing works are in Zhejiang province, China. Every value below comes from that manufacturer’s own published material, with the date it was recorded.
Cixi Lisheng manufactures miniature and small motor bearings under the CZ brand. Its catalogue includes metric 60, 62, 68, 69 and 16000 series, inch R series, stainless steel and nonstandard products. The company identifies brushless motors, power tools, garden tools and drones as applications. Confirm the exact model and operating requirements before specifying.
Published ranges: Metric miniature motor bearings · Inch R-series bearings · Stainless steel bearings · Nonstandard bearing designs
72 designations documented here · 1 reviewed evidence record · source recorded 2026-09-24
Ningbo Shilong manufactures high-precision bearings under the RCL name. Its published catalogue includes 67, 68, 69 and 60 series, with an emphasis on thin-wall bearings for compact mechanisms. Application pages identify encoders, motors, robots, bicycles and circular looms. Space envelope and rotational requirements are useful starting points for a technical inquiry.
Published ranges: 67- and 68-series thin-wall bearings · 69-series ball bearings · 60-series ball bearings
131 designations documented here · 1 reviewed evidence record · source recorded 2026-09-24
Deep groove bearings for motors and automotive use
Cixi Sihai develops and manufactures deep groove ball bearings. Its published scope gives a bore range of 6–35 mm and lists 6000, 6200, 6300, 6800 and 6900 series. Applications include vehicles, appliances, power tools, instruments and office equipment. Automotive engine-related references should be matched to the exact assembly.
Published ranges: 6000, 6200 and 6300 series · 6800 and 6900 series · Automotive engine-bearing applications
85 designations documented here · 1 reviewed evidence record · source recorded 2026-09-24
Application areas each manufacturer states for its own range. Confirm load, speed, temperature and lubrication for your case.
Not documented by any source here.
Precision class · Internal clearance · Sealing · Material · Cage material · Z class · V class · Limiting speed · Lubrication · Operating temperature · Precision standard · Ring material · Rolling element material · Noise / vibration test method · Manufacturer series · Manufacturer suffix · Ball count · Ball diameter.
Ask the manufacturer for these when you enquire.
Other designations with the same 40x52x7 mm envelope.
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